SELF-ABSORPTION CORRECTIONS FOR WELL-TYPE GERMANIUM DETECTORS

被引：198
|
作者：
APPLEBY, PG
RICHARDSON, N
NOLAN, PJ
机构：
[1] UNIV LIVERPOOL,DEPT PHYS,LIVERPOOL L69 3BX,ENGLAND
[2] UNIV LIVERPOOL,DEPT GEOG,LIVERPOOL L69 3BX,ENGLAND
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1992年 / 71卷 / 02期
关键词：
D O I：
10.1016/0168-583X(92)95328-O
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Corrections for self-absorption are of vital importance to accurate determination by gamma spectrometry of radionuclides such as Pb-210, Am-241 and Th-234 which emit low energy gamma radiation. A simple theoretical model for determining the necessary corrections for well-type germanium detectors is presented. In this model, self-absorption factors are expressed in terms of the mass attenuation coefficient of the sample and a parameter characterising the well geometry. Experimental measurements of self-absorption are used to evaluate the model and to determine a semi-empirical algorithm for improved estimates of the geometrical parameter.
引用
收藏
页码：228 / 233
页数：6
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